Pentatonix is in the original music biz nowadays, and now they're getting some high-profile friends on board, too.

After debuting new single "Can't Sleep Love" earlier this month, the a cappella quintet is back with a redo of the track, this time featuring Timbaland co-sign Tink.

If you've listened to and/or watched the original song or video for "Can't Sleep Love," you'll find not much has changed. The difference? Tink drops by for a verse on the bridge, contributing a grounded vocal that borders on a little bit of scatting at times.

Afterward, it's back to business as PTX finishes off the original tune.

"Can't Sleep Love" is the first single off the a cappella group's first album of original music. The self-titled effort is expected for an Oct. 16 release. Tink, meanwhile, is coming up on her debut full-length, Think Tink.